luster
You are testing the relative hardness of the mineral.
Diamond is the hardest known mineral, which is a physical property of the mineral.
It forms a crystal.
Hardness is better.
shape
luster
crystal shape
crystal shape
The property is hardness.
The Mohs scale is used to identify the mineral property of hardness only.
The color, luster, and crystal shape of a mineral may be observed just by looking at the mineral. Some minerals have very distinctive colors that help identify them. Although the color of a mineral can give away its identity, color is the least useful property for mineral identification.
The physical property of a mineral that causes it to break with rough or jagged edges
The natural shape of a mineral would be its crystalline structure.
The property that describes a mineral's surface shines is called luster.
If the mineral rights have been severed from the property and the owner of the mineral rights does not own the property then there is no need to notify the property owner. It's possible to own the mineral rights and not own the property. That would be called the "mineral estate". The owner of the property if different than the mineral owner would be the owner of the "property estate". Being the "mineral estate" owner gives you the same rights as being a "property owner". You can do as you wish with your mineral interests. Only time there is a need to notify the property owner is if any leasing will be going on. Hope this helps.
The characteristic property of the mineral pyrite is sand it is very shiny